diff --git a/source/dnode/vnode/src/tsdb/tsdbCacheRead.c b/source/dnode/vnode/src/tsdb/tsdbCacheRead.c
index 1396b822bf5986ec5443545882ef9efea50f9792..2ae3115c0ab8de0f19a6bf82d2cc2fa9de4d3e9b 100644
--- a/source/dnode/vnode/src/tsdb/tsdbCacheRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbCacheRead.c
@@ -338,8 +338,7 @@ _end:
   tsdbDataFReaderClose(&pr->pDataFReader);
 
   tsdbUntakeReadSnap(pr->pVnode->pTsdb, pr->pReadSnap, "cache-l");
-  pr->pDataFReaderLast = NULL;
-  pr->pDataFReader = NULL;
+  resetLastBlockLoadInfo(pr->pLoadInfo);
 
   for (int32_t j = 0; j < pr->numOfCols; ++j) {
     taosMemoryFree(pRes[j]);